The two cops were on bike patrol at 5:10 p.m. when they spotted three people standing between vacant buildings at 104 Sherwood Mall, according to a police report.

And they were able to make the arrests by approaching quietly enough to catch the trio by surprise, according to police spokesman Bill Roth.

"It's an arrest that's consistent with the bike patrol, because you can ride up on people and have the element of surprise," Roth said, noting that the officers smelled marijuana as they approached. During a search, they found 14 blots of LSD and half an ounce of marijuana.

Police charged Raphael Torres, 19, of the 200 block of Tabbs Lane, with possession of LSD and possession of marijuana.

The officers also arrested two juveniles at the scene on drug charges, but their names were not released because of their ages.

One of the juveniles was also charged with carrying a concealed weapon, according to police.